It also shows that the Lord will make them His possession and bring them to Himself. This was proclaimed through Isaiah, who says: "The Deliverer will come from Zion and will turn ungodliness from Jacob, says the Lord" (Isa 59:20).
The prophet and the apostle agree with Isaiah in harmony with one another. One sings: "You will make them turn their back. With Your remnants You will prepare their face" (Ps 20:13). The other writes: "When the fullness of the Gentiles has come in, then all Israel will be saved" (Rom 11:25-26).
Earlier John said that those who believed from Israel numbered one hundred forty-four thousand, twelve thousand from each tribe (see Rev 7:4-8). Is he speaking of them here also? I do not think so.
For he names them without using the article. He did not say "the one hundred forty-four thousand," but only "one hundred forty-four thousand." Moreover, he testifies that they preserved virginity.
Virginity was by no means an object of special striving in Israel, just as later it did not concern Christians from the Gentiles. Therefore, by those spoken of here one should understand a mixture of Israelites and Gentiles, and even mostly Gentiles.